Non-sanatana religious faith may have some beginning in the annals of human history, but there is no beginning to the history of sanatana-dharma, because it remains eternally with the living entities. Insofar as the living entities are concerned, the authoritative Sastras state that the living entity has neither birth nor death. In the Gita it is stated that the living entity is never born and he never dies. He is eternal and indestructible, and he continues to live after the destruction of his temporary material body. In reference to the concept of sanatana-dharma, we must try to understand the concept of religion from the Sanskrit root meaning of the word. Dharma refers to that which is constantly existing with a particular object. We conclude that there is heat and light along with the fire; without heat and light, there is no meaning to the word fire. Similarly, we must discover the essential part of the living being, that part which is his constant companion. That constant companion is his eternal quality, and that eternal quality is his eternal religion.

When Sanatana Gosvami asked Sri Chaitanya Mahaprabhu about the svarupa of every living being, the Lord replied that the svarupa, or constitutional position, of the living being is the rendering of service to the Supreme Personality of Godhead. If we analyze this statement of Lord Chaitanya’s, we can easily easily see that every living being is constantly engaged in rendering service to another living being. A living being serves other living beings in various capacities. By doing so, the living entity enjoys life. The lower animals serve human beings as servants serve their master. A serves B master, B serves C master, and C serves D master and so on. Under these circumstances, we can see that one friend serves another friend, the mother serves the son, the wife serves the husband, the husband serves the wife and so on. If we go on searching in this spirit, it will be seen that there is no exception in the society of living beings to the activity of service. The politician presents his manifesto for the public to convince them of his capacity for service. The voters therefore give the politician their valuable votes, thinking that he will render valuable service to society. The shopkeeper serves the customer, and the artisan serves the capitalist. The capatilist serves the family, and the family serves the state in the terms of the eternal capacity of the eternal living being. In this way we can see that no living being is exempt from rendering service to other living beings, and therefore we can safely conclude that service is the constant companion of the living being and that the rendering of service is the eternal religion of the living being.

Yet man professes to belong to a particular type of faith with reference to particular time and circumstance and thus claims to be a Hindu, Muslim, Christian, Buddhist or an adherent of any other sect. Such designations are non – sanatana-dharma. A Hindu may change his faith to become a Muslim, or a Muslim may change his faith to become a Hindu, or a Christian may change his faith and so on. But in all circumstances the change of religious faith does not affect the eternal occupation of rendering service to others. The Hindu, Muslim or Christian in all circumstances is servant of someone. Thus, to profess a particular type of faith is not to profess one’s sanatana-dharma. The rendering of service is sanatana-dharma.

Factually we are related to the Supreme Lord in service. The Supreme Lord is the supreme enjoyer, and we living entities are His servitors. We are created for His enjoyment, and if we participate in that eternal enjoyment with the Supreme Personality of Godhead, we become happy. We cannot become happy otherwise. It is not possible to be happy independently, just as no one part of the body can be happy without cooperating with the stomach. It is not possible for the living entity to be happy without rendering transcendental loving service unto the Supreme Lord.

In the Bhagavad-gita, worship of different demigods or rendering service to them is not approved. It is stated in the Seventh Chapter, twentieth verse:

Kamais tais tair hrta jnanah
Prapadyante nya-devatah
Tam tam niyamam asthaya
Prakrtya niyatah svaya

“Those whose intelligence has been stolen by material desires surrender unto demigods and follow the particular rules and regulations of worship according to their own natures.” Here it is plainly said that those who are directed by lust worship the demigods and not the Supreme Lord Krishna. When we mention the name Krishna, we do not refer to any sectarian name. Krishna means the highest pleasure, and it is confirmed that the Supreme Lord is the reservoir or storehouse of all pleasure. We are all hankering after pleasure. Ananda-mayo bhyasat (Vedanta-sutra 1.1.12). The living entities, like the Lord, are full of consciousness, and they are after happiness. The Lord is perpetually happy, and if the living entities associate with the Lord, cooperate with Him and take part in His association, then they also become happy.

The Lord descends to this mortal world to show His pastimes in Vrindavana, which are full of happiness. When Lord Sri Krishna was in Vrindavana, His activities with His cowherd boyfriends, with His damsel friends, with the other inhabitants of Vrindavana and with the cows were all full of happiness. The total population of Vrindavana knew nothing but Krishna. But Lord Krishna even discouraged His father Nanda Maharaja from worshipping the demigod Indra, because He wanted to establish the fact that people need not worship any demigod. They need only worship the Supreme Lord, because their ultimate goal is to return to His abode.

The abode of Lord Sri Krishna is described in the Bhagavad-gita, Fifteenth Chapter, sixth verse:

Na tad bhasayate suryo
Na sasanko na pavakah
Yad gatva na nivartante
Tad dhama paramam mama

“That supreme abode of Mine is not illumined by the sun or moon, nor by fire or electricity. Those who reach it never return to this material world.”

This verse gives a description of that eternal sky. Of course we have a material conception of the sky, and we think of it in relationship to the sun, moon, stars and so on, but in this verse the Lord states that in the eternal sky there is no need for the sun nor for the moon nor electricity or fire of any kind because the spiritual sky is already illuminated by the brahmajyoti, the rays emanating from the Supreme Lord. We are trying with difficulty to reach other planets, but it is not difficult to understand the abode of the Supreme Lord. This abode is referred to as Goloka. In the Brahmasamhita (5.37) it is beautifully described: goloka eva nivasaty akhilata-bhutah. The Lord resides eternally in His abode Goloka, yet He can be approached from this world, and to this end the Lord comes to manifest His real form, sac-cid-ananda-vigraha. When He manifests this form, there is no need for our imagining what He looks like. To discourage such imaginative speculation, He descends and exhibits Himself as He is, as Syamasundara. Unfortunately, the less intelligent deride Him because He comes as one of us and plays with us as a human being. But because of this we should not consider the Lord one of us. It is by His omnipotency that He presents Himself in His real form before us and displays His pastimes, which are replicas of those pastimes found in His abode.

In the effulgent rays of the spiritual sky there are innumerable planets floating. The brahmajyoti emanates from the supreme abode, Krishnaloka, and the Ananda-maya, cin-maya planets, which are not material, float in those rays. The Lord says, a tad bhasayate suryo na sasanko na pavakah / yad gatva na nivartante tad dhama paramam mama. One who can approach that spiritual sky is not required to descend again to the material sky. In the material sky even if we approach the highest planet (Brahmaloka), what to speak of the moon, we will find the same conditions of life, namely birth, death, disease and old age. No planet in the material universe is free from these four principles of material existence.

The living entities are traveling from one planet to another, but it is not that we can go to any planet we like merely by a mechanical arrangement. If we desire to go to other planets, there is a process for going there. This is also mentioned: yanti deva-vrata devan pitrn yanti pitr-vratah. No mechanical arrangement is necessary if we want interplanetary travel. The Gita instructs: yanti deva-vrata devan. The moon, the sun and higher planets are called Svargaloka. There are three different statuses of planets: higher, middle and lower planetary systems. The earth belongs to the middle planetary system. Bhagavad-gita informs us how to travel to the higher planetary systems (Devaloka) with a very simple formula: yanti deva-vrata devan. One need only worship the particular demigod of that particular planet and in that way go to the moon, the sun or any of the higher planetary systems.

Yet Bhagavad-gita does not advise us to go to any of the planets in this material world, because even if we go to Brahmaloka, the highest planet, through some sort of mechanical contrivance by may be traveling for forty thousand years (and who would live that long?), we will still find the material inconveniences of birth, death, disease and old age. But one who wants to approach the supreme planet, Krishnaloka, or any of the other planets within the spiritual sky, will not meet with these material inconveniences. Amongst all of the planets in the spiritual sky there is one supreme planet called Goloka Vrindavana, which is the original planet in the abode of the original Personality of Godhead Sri Krishna. All of this information is given in Bhagavad-gita, and we are given through its instruction information how to leave the material world and begin a truly blissful life in the spiritual sky.